Well mass production works because a singe product is produced a massive scale. With a 3D printer I can print whatever I would like. Sure a factory could be c

Well mass production works because a singe product is produced a massive scale. With a 3D printer I can print whatever I would like. Sure a factory could be created that would 3D print things on demand, but I would have to imagine that distribution costs would be a big factor even if it was cheaper to mass produce.